We alerted the Scottish Prison Service to the clip and held back our story 24 hours to let them investigate properly
But Conservative shadow justice secretary Douglas Ross insisted jail chiefs must themselves crack down on such stunts.
He said: “It’s absurd that this offender has been getting away with being in possession of luxuries and potentially drugs while serving a punishment.

“This is just one of many examples that put the spotlight on Scotland’s soft touch justice system.

“Prison officials must do everything possible to stop this blatant disregard for prison policy.

“We also need to put an end to the increasing tendency to give in to the demands of certain offenders when they seek home comforts many family homes can’t afford.”

Former top cop and ex-MSP Graeme Pearson added: “These online posts reinforce the suggestion that life is dandy on the inside for prisoners. Authorities need to stop the undermining of the service via online posts like this and punish people who do this.

“Whether or not they are taking drugs, it is clear that they exist in the prison system — that needs to be clamped down on.”

Among other social media pics of Dempster — who is believed to be from Glasgow and describes himself on Facebook as a “former chef at HMP Barlinnie” — is one that emerged this week showing him in his cell with a filter that makes it look like he’s wearing a pink cap.

Inmates in clip
His Facebook page also points to a cushy jail life with pictures showing toiletries and lads’ mags in his cell — although it is not clear if all the photos are taken in HMP Perth.

An image he shared in December also showed a huge tub of protein powder and pasta in his quarters, while other photos he’s posted are of flash cars and luxury watches.

Dempster — caged for a high-value theft — says on Facebook he is due to be freed in August and has told a pal: “Not home yet, not got long too go tho”. Another prison source said: “Videos like this are an act of bravado from prisoners who are determined to show they’re handling their sentence.”

The Scottish Prison Service said: “We thank The Scottish Sun for bringing this to our attention and we are actively investigating all of the claims.

“It would be inappropriate to comment further as this might result in police action.”

ben-archibald@the-sun.co.uk

CHAOS ON CAMERA

PRISONS have been plagued by cons using mobile phones and the internet to show off chaos behind bars.

We told in 2010 how twisted louts at Shotts jail in Lanarkshire filmed themselves torturing other inmates who’d agreed to be savagely beaten in return for drugs. Footage shows one brute whipping another man.

Last year, we discovered a video — posted by kidnap thug Dominic Usher, 29 — of partying criminals snorting drugs in an English nick.

Months later, we revealed that swaggering lags had been seen high on drugs at Guys Marsh, a Category C jail near Shaftesbury, Dorset.

Others were filmed frying steaks in their cells, being sick after downing home-made “hooch”, abusing fellow inmates and brandishing blades.

Just last week, a BBC Panorama documentary showed undercover footage of inmates laying out lines of drugs on a surface as music blared in the background at HMP Northumberland.

A prison officer was also seen having convulsions after accidentally inhaling the drug Spice.

DRUG BUSTS HIT 2,000

SCREWS made more than 2,000 drug seizures last year as smuggling attempts rocketed.

Confiscations in Scotland’s jails rose 16 per cent to 2,078 from 1,784 the year before.

Perth prison logged 149 busts, compared with 131 in 2014-15 and 115 during 2013-14. The haul included 892grams of heroin, 56g of cocaine, 4kg cannabis, used to roll reefers, right, 33g of amphetamine and 18,453 “miscellaneous” tablets.

Privately-run Addiewell, West Lothian, had the highest number with 314 seizures, according to figures released by the Scottish Prison Service.

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